Even if the pipe ses that its not pressure rated it probly is, Most pipe is rated to some kind of pressure,Before sale to the public,,,and from my source ,basic hair spray when detonated creates about 100psi+ of pressure but dont hold me to it.
its only when the pipe becomes brittle should u worry about it exploding..

0

Last edited by FORE!!!! on Mon Jul 27, 2009 4:50 am, edited 2 times in total.

FORE!!!! wrote:Even if the pipe ses that its not pressure rated it probly is, All pipe is rated to some kind of pressure,Before sale to the public,,,and from my source ,basic hair spray when detonated creates about 100psi+ of pressure but dont hold me to it.

1. Your hairspray does not detonate, it deflagrates
2. It does not produce 100+ psi

And no, not all pipe is pressure rated.

0

PimpAssasinG wrote:no im strong but you are a fat gay mother sucker that gets raped by black man for fun

Even if the pipe ses that its not pressure rated it probly is, All pipe is rated to some kind of pressure,Before sale to the public,,,and from my source ,basic hair spray when detonated creates about 100psi+ of pressure but dont hold me to it.

When it says it's not rated for pressure, they mean exactly that. Of course it can hold some pressure, that'd probably be part of their testing to make sure the pipe can widthstand certain scenarios. But the pipe could blow up as low as 20psi, or as high as 150psi. That's the thing, no one knows (with out any data and tests anyway).

It should be safe in a hair spray combustion though, they only create about 40psi of pressure, not 100psi. But it's your own risk. Just buy rated PVC if you're that worried. It's so cheap in America.

ABS is much less likely to shatter when it fails. Thick wall cellular foam is very tough. I did a pressure test on it. I did not test to failure as was my intent. It didn't fail below my test pressure.

Technician1002 wrote:ABS is much less likely to shatter when it fails. Thick wall cellular foam is very tough. I did a pressure test on it. I did not test to failure as was my intent. It didn't fail below my test pressure.

All common aerosols fuels, from RightGaurd to pure propane will pressurize a closed chamber to about the same maximum pressure if the mixture is correct. That maximum pressure is about 120 PSIG.

That 120 PSIG of pressure won't last very long in a closed chamber. Heat loss will bring the pressure back near atmospheric in less than 1 second.

Combustion spudguns rarely excceeds 60~70 PSIG when firing, many guns don't even get that high. Peak pressure mostly depends on the friction between the ammo and barrel, the mass of the ammo and the diameter of the barrel. Even though the chamber was going to get to ~120 PSIG, movement of the ammo lowers the peak pressure.

Cellcore PVC typically will work OK for a metered, 1x propane fueled, combustion spudgun without any safety problems. Pressure rated is of course preffered but doesn't appear to be absolutely necisary.